Who needs a whole panel just to see how your cpu is running or how much diskspace you have? I don't.
This is a simple theme which could be done by anyone, but i'll post it anyway since i know there are many ppl who will never look into karamba config options :)
Here is a compact and cryptic monitor.
It is formatted like this:
cpuload(%) | memused(MB) | disk1free(MB)::disk1total | disk2free::disk2total
Check the screenshot what it could look like on your desktop ( it is located at bottomright above the xmms control ).
When you use this theme you should edit the .theme file and set the mountpoints for your own mounts on your machine.
Have fun :)
Edit: On request, the second screenshot is the suse wallpaper (1600x1200). It is from SuSE itself, so it will probably be licensed or something.